Gri: Filename arguments when running gri

Chapters:
  1: Introduction
  2: Simple example
  3: Invocation
  4: Finer Control
  5: X-Y Plots
  6: Contour Plots
  7: Image Plots
  8: Examples
  9: Gri Commands
  10: Programming
  11: Environment
  12: Emacs Mode
  13: History
  14: Installation
  15: Gri Bugs
  16: Test Suite
  17: Gri in Press
  18: Acknowledgments
  19: License

Indices:
  Concepts
  Commands
  Variables

12.7: Filename arguments when running gri

Usually, gri is run specifying only a gri command file to process, which lends itself well to the gri-mode command `gri-run'. But Gri can be also invoked from the command line using optional arguments, usually filenames but not necessarily, e.g.

$ gri somefile.gri datafile.dat datafile2.dat ...

$ gri somefile.gri *.dat

The arguments are accessed with RPN operators `argc' and `argv' (see Unary Operators).

gri-mode provides a method to set the arguments (usually filenames) to use when `gri-run' is called in a specific gri script. Use the gri-mode command `gri-set-command-postarguments' to setup a string that gri-mode will use, and the gri-mode command `gri-unset-command-postarguments' to clear it. For ease-of-use, these commands are made available from the menubar under the `Perform -> Run Settings' entries. The specified string will be stored in the locally-defined (aka buffer-local) variable `gri-command-postarguments' and will be written within a gri comment at the bottom of the file such that Emacs remembers it across editing sessions.